import Vue from 'vue'
import Router from 'vue-router'
import { hasDevelopment } from '@/settings'
import errorRouters from './error'
import Layout from '@/layout'
Vue.use(Router)

/**
 * Note: sub-menu only appear when route children.length >= 1
 * Detail see: https://panjiachen.github.io/vue-element-admin-site/guide/essentials/router-and-nav.html
 *
 * hidden: true                   if set true, item will not show in the sidebar(default is false)
 * alwaysShow: true               if set true, will always show the root menu
 *                                if not set alwaysShow, when item has more than one children route,
 *                                it will becomes nested mode, otherwise not show the root menu
 * redirect: noRedirect           if set noRedirect will no redirect in the breadcrumb
 * name:'router-name'             the name is used by <keep-alive> (must set!!!)
 * meta : {
    roles: ['admin','editor']    control the page roles (you can set multiple roles)
    title: 'title'               the name show in sidebar and breadcrumb (recommend set)
    icon: 'svg-name'             the icon show in the sidebar
    noCache: true                if set true, the page will no be cached(default is false)
    affix: true                  if set true, the tag will affix in the tags-view
    breadcrumb: false            if set false, the item will hidden in breadcrumb(default is true)
    activeMenu: '/example/list'  if set path, the sidebar will highlight the path you set
    type: ''                     if set 'demo', no packaging
  }
 */

const modulesFiles = require.context('./demos', true, /index\.js$/)
const modules = modulesFiles.keys().reduce((modules, modulePath) => {
  // set './app.js' => 'app'
  let moduleName = modulePath.replace(/^\.\/(.*)\.\w+$/, '$1')
  const names = moduleName.split('/')
  moduleName = names[names.length - 1]
  const value = modulesFiles(modulePath)
  modules.push(value.default)
  return modules
}, [])
console.log(modules)
const demosConstantRoutes = hasDevelopment ? [
  ...modules
] : []

export const constantRoutes = [
  ...demosConstantRoutes,
  {
    path: '/',
    component: Layout,
    redirect: '/home',
    hidden: true,
    children: [
      {
        path: 'home',
        component: () => import('@/views/index'),
        name: 'Home',
        hidden: true,
        meta: { title: 'Home', icon: 'home', affix: true }
      }
    ]
  },
  {
    path: '/redirect',
    component: Layout,
    hidden: true,
    children: [
      {
        path: '/redirect/:path(.*)',
        component: () => import('@/views/redirect/index')
      }
    ]
  },
  errorRouters
]

export const asyncRoutes = [
  // 404 page must be placed at the end !!!
  { path: '*', redirect: '/error/404', hidden: true }
]

const createRouter = () => new Router({
  // mode: 'history', // require service support
  scrollBehavior: () => ({ y: 0 }),
  routes: constantRoutes
})

const router = createRouter()

// Detail see: https://github.com/vuejs/vue-router/issues/1234#issuecomment-357941465
export function resetRouter() {
  const newRouter = createRouter()
  router.matcher = newRouter.matcher // reset router
}
export default router
